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Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?
541.67V, 200 rpm.
2166.67V, 270 rpm.
2166.67V, 230 rpm.
541.67V, 250 rpm.
541.67V, 200 rpm.
2166.67V, 270 rpm.
2166.67V, 230 rpm.
541.67V, 250 rpm.
Answer
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Answer
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Electrical Machines
Which of the following alternators contain large number of poles?
None of these
Hydro alternators.
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Answer
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Ward-Leonard control is basically a ___________ control method.
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Answer
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Electrical Machines
As compared to an induction motor, the air gap in a DC motor is
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same.
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Answer
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Electrical Machines
Open circuit in a transformer is prefered with
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rated transformer voltage
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Answer
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